toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
final buffer = StringBuffer();
buffer.writeln('Name: $name');
buffer.writeln('Last name: $lastName');
buffer.writeln('Nickname: $nickname');
buffer.writeln('Organization: $organization');
buffer.writeln('Role: $role');
buffer.writeln('Telephones: ${telephones.toString()}');
buffer.writeln('Videophones: ${videophones.toString()}');
buffer.writeln('Emails: ${emails.toString()}');
buffer.writeln('Addresses: ${addresses.toString()}');
buffer.writeln('URLs: ${urls.toString()}');
buffer.writeln('Birthday: ${birthday?.toIso8601String()}');
buffer.writeln('Social profiles: ${socialProfiles.toString()}');
buffer.writeln('Note: $note');
return buffer.toString();
}